Mixing equipment for producing liquid culture medium

Abstract

The invention relates to the technical field of liquid culture medium mixing equipment, and discloses liquid culture medium production mixing equipment which comprises a tank body, a magnetic rotating assembly is arranged in the tank body and comprises a driven rotating plate arranged in the middle of an inner cavity of a base, and two stirring magnetic rotors are mounted on the magnetic rotating assembly; and the two stirring magnetic rotors are obliquely arranged. A magnetic rotating assembly and two stirring magnetic rotors are arranged in a tank body, the magnetic rotating assembly and the stirring magnetic rotors are driven to rotate through the magnetic coupling effect, the two stirring magnetic rotors are driven by the magnetic rotating assembly to rotate slowly around the axis of the tank body, and therefore the positions of the two stirring magnetic rotors in the tank body are changed in real time; the stirring magnetic rotor is matched with high-speed rotation for stirring, so that when a large tank body is used for mixing a large amount of liquid culture media, the condition of stirring dead angles or unsmooth liquid flowing is effectively avoided, and the mixing efficiency and quality during production of the liquid culture media are improved.

Description

Technical Field

[0001] The present application relates to the technical field of liquid culture medium mixing equipment, and in particular to a mixing equipment for liquid culture medium production. Background Art

[0002] Liquid culture medium is a liquid culture medium for microorganisms or animal and plant cells. Its production process involves multiple links and elements. It is widely used in many fields such as microbiology, biology, medicine and industrial production. Among them, a stirring tank is required as a mixing equipment during the production of liquid culture medium. The magnetic stirring tank is driven by magnetic force and has no mechanical seal. It has the advantages of high safety, no leakage and easy tilting and maintenance. It is often used as a mixing equipment for liquid culture medium.

[0003] However, when the existing magnetic stirring tank is in use, since the stirring rotor in the stirring tank is fixed in the stirring tank, when a large amount of liquid culture medium needs to be produced, there are likely to be stirring dead corners or poor liquid flow, which is not conducive to the mixing uniformity of the liquid culture medium, resulting in low production efficiency and poor quality of the liquid culture medium. Summary of the invention

[0004] The present application proposes a mixing device for the production of liquid culture media, which has the advantages of high mixing efficiency and good quality of liquid culture media when mixing a large amount of liquid culture media. It is used to solve the problem that when the existing magnetic stirring tank is used for mixing liquid culture media, the position of the stirring rotor in the stirring tank is fixed, and when the stirring tank is large and the amount of liquid culture media in the stirring tank is large, it is easy to have a stirring dead corner.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a mixing device for liquid culture medium production, comprising a tank body composed of a base and a glass cylinder, a support leg is provided at the bottom of the outer side of the tank body, a drainage pipe is connected to the middle of the inner cavity of the base, a magnetic rotating component is provided inside the base, the magnetic rotating component comprises a passive rotating plate arranged in the middle of the inner cavity of the base, two stirring magnetic rotors are installed on the magnetic rotating component away from the side of the passive rotating plate, the two stirring magnetic rotors are arranged obliquely, and passive magnetic blocks are respectively provided in the passive rotating plate and the two stirring magnetic rotors.

[0006] A positioning carrier is fixedly installed at the bottom of the base, a rotating carrier is provided above the positioning carrier, and the rotating carrier is driven to rotate by a reduction motor provided at the bottom of the positioning carrier, and stirring drive devices are fixedly installed on both sides of the top of the rotating carrier, respectively, and a first driving magnetic rotor is provided on the stirring drive device, and the first driving magnetic rotor is provided with a first driving magnetic block that performs magnetic coupling with a passive magnetic block in the stirring magnetic rotor.

[0007] The outer side of the middle part of the bottom end of the base is provided with a second driving magnetic rotor located directly below the passive rotating plate, and the second driving magnetic rotor is provided with a second driving magnetic block that magnetically couples with the passive magnetic block on the passive rotating plate. The second driving magnetic rotor and the rotating carrier are connected through a linkage device to achieve synchronous rotation, so that the rotating carrier and the second driving magnetic rotor rotate synchronously.

[0008] Furthermore, a guide tube is fixedly installed in the middle of the inner cavity of the base, a guide groove located inside the base is opened on the outer side of the guide tube, a pipe plug is fixedly installed on the top of the guide tube, and the drain pipe is located below the guide tube.

[0009] Furthermore, the passive rotating plate is movably mounted on the outside of the guide tube, and the guide tube is provided with a protrusion that fits with the bottom of the base inner cavity. The protrusion is staggered with the guide groove, and the top of the protrusion is movably connected to the bottom of the passive rotating plate.

[0010] Furthermore, a limiting block is fixedly installed on the top of the passive rotating plate, four linkage shafts are installed on the outer side of the contact part between the passive rotating plate and the limiting block, and the four linkage shafts are distributed in a circular array on the outer side of the passive rotating plate and the limiting block, and each linkage shaft is sleeved with a linkage sleeve at one end away from the passive rotating plate, wherein a first arc-shaped connecting shaft is fixedly installed between two linkage sleeves, and second arc-shaped connecting shafts are respectively fixedly installed at one end of the two linkage sleeves away from the first arc-shaped connecting shaft, linkage plates are respectively fixedly installed at one end of the two second arc-shaped connecting shafts away from the linkage sleeves, and limiting shafts are respectively fixedly installed on the two linkage plates, and the stirring magnetic rotor is movably sleeved on the limiting shafts.

[0011] Furthermore, the top of the limiting block is designed as an arc surface, and a sealing block for sealing the bolt is provided on the limiting block.

[0012] Furthermore, a supporting ring plate is fixedly installed on the top of the positioning carrier plate, the rotating carrier plate is fixedly installed on the supporting ring plate through a plane bearing, a passive gear ring is fixedly installed on the bottom of the rotating carrier plate, a reduction motor located on one side of the discharge pipe is fixedly installed on the bottom of the positioning carrier plate, the output shaft of the reduction motor extends to the top of the positioning carrier plate and is fixedly installed with a driving gear, and the outer teeth of the driving gear are meshed with the outer teeth of the passive gear ring.

[0013] Furthermore, the stirring drive device also includes a stirring motor fixedly mounted on the rotating carrier, the output shaft of the stirring motor is fixedly mounted with an active bevel gear, the stirring drive device also includes a support plate fixedly mounted on the rotating carrier, the support plate is movably connected to the output shaft of the stirring motor, and the top of the support plate is designed as an inclined surface, a limiting plate is fixedly mounted on the top of the support plate, a limiting shaft sleeve is fixedly mounted on the end of the limiting plate away from the support plate, a positioning shaft is movably mounted on the limiting shaft sleeve, and the first driving magnetic rotor is fixedly mounted on one end of the positioning shaft.

[0014] Furthermore, the axis of the first driving magnetic rotor and the axis of the stirring magnetic rotor are located on the same axis line.

[0015] Furthermore, a linkage ring plate is fixedly installed at the bottom of the second driving magnetic rotor, and a plurality of slots distributed in a circumferential array are opened at the bottom of the linkage ring plate, and the number of the slots is not less than two, and the linkage device includes linkage clamping shafts that are equal to and compatible with the number of the slots.

[0016] Furthermore, the linkage device also includes a limit ring plate fixedly mounted on the rotating carrier plate and a hydraulic cylinder fixedly mounted on the bottom of the positioning carrier plate. The number of the hydraulic cylinders is set to two. The piston shafts of the two hydraulic cylinders extend to the top of the positioning carrier plate and are fixedly mounted with a positioning ring plate. A passive ring plate is fixedly mounted on the top of the positioning ring plate through a plane bearing, and the linkage clamping shaft is fixedly mounted on the passive ring plate.

[0017] The beneficial effects of the present invention are as follows: 1. The present application provides a mixing device for the production of liquid culture medium, which comprises a magnetic rotating assembly arranged inside a tank body, a stirring magnetic rotor arranged on each side of the magnetic rotating assembly, and both the magnetic rotating assembly and the stirring magnetic rotor are driven to rotate by magnetic coupling. The magnetic rotating assembly is used to drive the two stirring magnetic rotors to rotate slowly along the axis of the tank body, thereby changing the positions of the two stirring magnetic rotors in the tank body in real time, and stirring is performed in coordination with the high-speed rotation of the stirring magnetic rotor, so that when a large tank body is used to mix a large amount of liquid culture medium, stirring dead corners or poor liquid flow are effectively avoided, thereby improving the mixing efficiency and quality during the production of liquid culture medium.

[0018] 2. The present application provides a mixing device for the production of liquid culture medium. Through the inclined setting of two stirring magnetic rotors, when the liquid culture medium is mixed in the tank body, the inclined stirring magnetic rotor will generate a stronger shear force during rotation, which can more effectively break the laminar flow state of the liquid, promote turbulent mixing of the liquid, reduce stirring dead corners, and make the components in the liquid more evenly distributed, which is beneficial to improving the mixing uniformity of the liquid culture medium and further improving the mixing efficiency and quality of the liquid culture medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative work: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A local enlarged structural diagram of the part; Figure 3 for Figure 1 A schematic diagram of the structure of the magnetic rotating assembly; Figure 4 for Figure 3 A schematic diagram of the structure of a stirring magnetic rotor; Figure 5 for Figure 4 A schematic diagram of the middle section structure of the stirring magnetic rotor; Figure 6 for Figure 1 A schematic diagram of the structure of the stirring drive device; Figure 7 for Figure 1 Schematic diagram of the structure of the intermediate linkage device; Figure 8 for Figure 1 Schematic diagram of the meshing structure between the passive ring gear and the driving gear.

[0020] In the figure: 1, base; 2, glass cylinder; 3, supporting leg; 4, guide tube; 401, guide groove; 5, pipe plug; 6, drain pipe; 7, passive rotating plate; 8, limiting block; 9, linkage shaft; 10, linkage sleeve; 11, first arc-shaped connecting shaft; 12, second arc-shaped connecting shaft; 13, linkage plate; 14, limiting shaft; 15, stirring magnetic rotor; 16, positioning carrier plate; 17, supporting ring plate; 18, rotating carrier plate; 19, stirring motor; 20. Active bevel gear; 21. Support plate; 22. Limiting plate; 23. Limiting sleeve; 24. Positioning shaft; 25. First driving magnetic rotor; 26. Passive bevel gear; 27. Second driving magnetic rotor; 28. Linkage ring plate; 281. Clamping groove; 29. ​​Limiting ring plate; 30. Hydraulic cylinder; 31. Positioning ring plate; 32. Passive ring plate; 33. Linkage clamping shaft; 34. Passive gear ring; 35. Speed ​​reduction motor; 36. Active gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] For examples, see Figure 1A mixing device for liquid culture medium production includes a base 1, a glass cylinder 2 is fixedly installed on the top of the inner side of the base 1, and support legs 3 are provided on the bottom of the outer side of the base 1. The number of the support legs 3 is not less than three, thereby forming a stable support for the base 1 and the glass cylinder 2. The base 1 and the glass cylinder 2 form a tank body for mixing liquid culture medium.

[0023] See also Figure 1 and Figure 3 A guide tube 4 is fixedly installed in the middle of the inner cavity of the base 1, and a guide groove 401 located inside the base 1 is opened on the outer side of the guide tube 4. A pipe plug 5 is fixedly installed on the top of the guide tube 4. A drain pipe 6 located below the guide tube 4 is fixedly installed in the middle of the inner cavity of the base 1. A valve is provided on the drain pipe 6 (not shown in the figure). The liquid culture medium in the tank body can enter the guide tube 4 through the guide groove 401 and be discharged from the tank body through the drain pipe 6.

[0024] A magnetic rotating assembly is provided inside the base 1, and the magnetic rotating assembly includes a passive rotating plate 7, which is movably mounted on the outside of the guide tube 4, and the guide tube 4 is provided with a protrusion that fits with the bottom of the inner cavity of the base 1, the protrusion is staggered with the guide groove 401, and the top of the protrusion is movably connected to the bottom of the passive rotating plate 7, and the passive rotating plate 7 is supported by the protrusion so that the passive rotating plate 7 is located above the guide groove 401 to ensure that the water in the tank body can flow out through the guide groove 401, and passive magnetic blocks are fixedly installed on both sides of the bottom of the passive rotating plate 7, and a limiting block 8 is fixedly installed on the top of the passive rotating plate 7, and the limiting block 8 is fixed to the passive rotating plate 7 by bolts, the top of the limiting block 8 is designed as an arc surface, and a sealing block for sealing the bolts is provided on the limiting block 8.

[0025] Four linkage shafts 9 are installed on the outside of the contact part between the passive rotating plate 7 and the limiting block 8, and the four linkage shafts 9 are distributed in a circular array on the outside of the passive rotating plate 7 and the limiting block 8. When installing the linkage shaft 9, the linkage shaft 9 is first placed on the passive rotating plate 7, and then the limiting block 8 is fixed to the passive rotating plate 7, thereby fixing the linkage shaft 9 so that the linkage shaft 9, the passive rotating plate 7 and the limiting block 8 can remain as a whole.

[0026] See also Figure 3-Figure 5 A linkage sleeve 10 is mounted on one end of each linkage shaft 9 away from the passive rotating plate 7, wherein a first arc-shaped linkage shaft 11 is fixedly installed between the two linkage sleeves 10, and second arc-shaped linkage shafts 12 are fixedly installed on one end of the two linkage sleeves 10 away from the first arc-shaped linkage shaft 11, respectively, linkage plates 13 are fixedly installed on one end of the two second arc-shaped linkage shafts 12 away from the linkage sleeves 10, and limiting shafts 14 are fixedly installed on the two linkage plates 13, and a stirring magnetic rotor 15 located on the linkage plate 13 is movably mounted on the outer side of the limiting shaft 14, and a stirring blade is arranged on the stirring magnetic rotor 15, and passive magnetic blocks are arranged on both sides of the bottom of the stirring magnetic rotor 15.

[0027] The linkage shaft 9 is tilted along the inner bottom of the base 1. The inner bottom of the base 1 is generally a smooth arc surface, which is convenient for discharging the liquid culture medium. The linkage shaft 9 is tilted along the inner bottom of the base 1 so that the two stirring magnetic rotors 15 can also be tilted and close to the inner wall of the base 1. When the liquid culture medium is mixed in the tank body, the tilted stirring magnetic rotor 15 will generate stronger shear force during rotation, which can more effectively break the laminar flow state of the liquid, promote turbulent mixing of the liquid, reduce stirring dead angles, and make the components in the liquid more evenly distributed, which is beneficial to improving the mixing uniformity of the liquid culture medium and improving the mixing efficiency of the liquid culture medium. The two stirring magnetic rotors 15 are installed on the magnetic rotating assembly, so that the magnetic rotating assembly drives the two stirring magnetic rotors 15 to rotate slowly along the axis of the tank body, thereby changing the positions of the two stirring magnetic rotors 15 in the tank body in real time. When a large tank body is used to mix a large amount of liquid culture medium, stirring dead angles or poor liquid flow are effectively avoided, further improving the mixing efficiency during liquid culture medium production.

[0028] See also Figure 1 , Figure 6-Figure 7 A positioning carrier plate 16 is provided below the base 1, and the positioning carrier plate 16 is fixedly sleeved with the supporting legs 3, and the supporting legs 3 also support the positioning carrier plate 16. A supporting ring plate 17 is fixedly installed on the top of the positioning carrier plate 16, and the rotating carrier plate 18 is fixedly installed on the supporting ring plate 17 through a plane bearing, and stirring driving devices are fixedly installed on both sides of the top of the rotating carrier plate 18.

[0029] The stirring driving device includes a stirring motor 19 fixedly mounted on a rotating carrier plate 18, an output shaft of the stirring motor 19 is fixedly mounted with an active bevel gear 20, the stirring driving device also includes a support plate 21 fixedly mounted on the rotating carrier plate 18, the support plate 21 is movably sleeved with the output shaft of the stirring motor 19, and the top of the support plate 21 is designed as an inclined surface, a limiting plate 22 is fixedly mounted on the top of the support plate 21, a limiting shaft sleeve 23 is fixedly mounted on one end of the limiting plate 22 away from the support plate 21, a positioning shaft 24 is movably sleeved on the limiting shaft sleeve 23, a first driving magnetic rotor 25 is fixedly mounted on one end of the positioning shaft 24, the axis of the first driving magnetic rotor 25 is located on the same axis line as the axis of the stirring magnetic rotor 15, and the first driving magnetic rotor 25 is close to the stirring magnetic rotor 1 5. First driving magnetic blocks are fixedly installed on both sides of the top of the first driving magnetic rotor 25. When the first driving magnetic rotor 25 rotates, it can use the magnetic force occasionally to drive the stirring magnetic rotor 15 to rotate, so as to stir the liquid culture medium when mixing in the tank body, which is beneficial to the uniform mixing of the liquid culture medium and improves the mixing efficiency of the liquid culture medium. A passive bevel gear 26 is fixedly installed on the other end of the positioning shaft 24, and the outer teeth of the passive bevel gear 26 are meshed with the outer teeth of the active bevel gear 20. The active bevel gear 20 is driven by the stirring motor 19 to drive the output shaft to rotate at a high speed, thereby driving the passive bevel gear 26, the positioning shaft 24 and the first driving magnetic rotor 25 to rotate at a high speed, and the stirring magnetic rotor 15 in the tank body can be driven to rotate at a high speed, so that the mixed liquid culture medium in the tank body is mixed evenly.

[0030] See also Figure 1-Figure 2 , Figure 7 A second driving magnetic rotor 27 is installed on the outer side of the middle part of the bottom end of the base 1 through a bearing. The second driving magnetic rotor 27 is located directly below the passive rotating plate 7. The top and both sides of the second driving magnetic rotor 27 are provided with second driving magnetic blocks that are magnetically coupled with the passive magnetic blocks on both sides of the bottom of the passive rotating plate 7. A linkage ring plate 28 is fixedly installed at the bottom of the second driving magnetic rotor 27, and a plurality of slots 281 distributed in a circumferential array are opened at the bottom of the linkage ring plate 28, and the number of the slots 281 is not less than two, and a linkage device is provided below the linkage ring plate 28.

[0031] The linkage device includes a limiting ring plate 29 fixedly mounted on the rotating carrier plate 18 and a hydraulic cylinder 30 fixedly mounted on the bottom of the positioning carrier plate 16. The number of the hydraulic cylinders 30 is set to two. The piston shafts of the two hydraulic cylinders 30 extend to the top of the positioning carrier plate 16 and are fixedly mounted with a positioning ring plate 31. A passive ring plate 32 is fixedly mounted on the top of the positioning ring plate 31 through a plane bearing. The top of the passive ring plate 32 is fixedly mounted with linkage card shafts 33 having the same number as the card slots 281, and the top end of the linkage card shaft 33 is adapted to the card slots 281. The linkage card shaft 33 is movably fitted with the limiting ring plate 29.

[0032] See also Figure 1 and Figure 8 A passive gear ring 34 is fixedly installed at the bottom of the rotating carrier plate 18, and a reduction motor 35 located on one side of the discharge pipe 6 is fixedly installed at the bottom of the positioning carrier plate 16. The output shaft of the reduction motor 35 extends to the top of the positioning carrier plate 16 and is fixedly installed with a driving gear 36. The outer teeth of the driving gear 36 mesh with the outer teeth of the passive gear ring 34.

[0033] The output shaft is driven by the reduction motor 35 to drive the driving gear 36 to rotate, thereby utilizing the meshing action of the reduction motor 35 and the driving gear 36 to drive the rotating carrier 18 to rotate. When it is necessary to control the two stirring magnetic rotors 15 to rotate around the axis of the tank body in the tank body, the piston shaft is driven by the hydraulic cylinder 30 to push the positioning ring plate 31 upward, thereby driving the passive ring plate 32 and the linkage clamping shaft 33 to move upward, so that the linkage clamping shaft 33 is inserted into the clamping groove 281, and the reduction motor 35 drives the driving gear 36 to drive the passive gear ring 34 to rotate slowly, so that when the rotating carrier 18 rotates around the axis of the tank base 1, the linkage clamping shaft 33 is connected with the clamping groove 281 at the bottom of the linkage ring plate 28, and the rotating carrier 18 drives the linkage ring plate 28 and the second driving magnetic rotor 27 to rotate together, and also drives the two stirring driving devices on the rotating carrier 18 to rotate together, and at the same time, the second driving magnetic block on the second driving magnetic rotor 27 is connected to the passive rotating plate 7 The magnetic coupling effect of the passive magnetic blocks on both sides of the bottom causes the passive rotating plate 7 in the tank body to rotate together, and the passive rotating plate 7 drives the limiting block 8, the linkage shaft 9, the linkage sleeve 10, the first arc-shaped connecting shaft 11, the second arc-shaped connecting shaft 12 and the linkage plate 13 to rotate together, thereby respectively driving the stirring magnetic rotors 15 on the two linkage plates 13 to rotate synchronously, so that the first driving magnetic block on the first driving magnetic rotor 25 in the two stirring driving devices is magnetically coupled with the passive magnetic blocks on both sides of the bottom of the stirring magnetic rotor 15, so that the two stirring magnetic rotors 15 maintain high-speed rotation while also rotating slowly around the axis of the tank base 1, and changing the positions of the two stirring magnetic rotors 15 in the tank body in real time. Compared with the fixed position setting method of the stirring magnetic rotor 15 of the existing magnetic stirring tank, the problem of stirring dead corners when a large amount of liquid culture medium is mixed in the tank body is avoided, thereby improving the mixing efficiency and quality of the liquid culture medium.

[0034] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mixing device for producing a liquid culture medium, comprising a tank body consisting of a base (1) and a glass cylinder (2), a support leg (3) being provided at the bottom of the outer side of the tank body, a drain pipe (6) being connected to the middle of the inner cavity of the base (1), and characterized in that: A magnetic rotating assembly is provided inside the base (1), the magnetic rotating assembly comprising a passive rotating plate (7) provided in the middle of the inner cavity of the base (1), two stirring magnetic rotors (15) are mounted on the magnetic rotating assembly away from the passive rotating plate (7), the two stirring magnetic rotors (15) are arranged at an angle, and passive magnetic blocks are respectively provided inside the passive rotating plate (7) and the two stirring magnetic rotors (15); A positioning carrier plate (16) is fixedly mounted on the bottom of the base (1), a rotating carrier plate (18) is arranged above the positioning carrier plate (16), and the rotating carrier plate (18) is driven to rotate by a reduction motor (35) arranged at the bottom of the positioning carrier plate (16), and stirring drive devices are fixedly mounted on both sides of the top of the rotating carrier plate (18), a first driving magnetic rotor (25) is arranged on the stirring drive device, and a first driving magnetic block is arranged on the first driving magnetic rotor (25) for magnetically coupling with a passive magnetic block in the stirring magnetic rotor (15); A second driving magnetic rotor (27) located directly below the passive rotating plate (7) is provided on the outer side of the middle portion of the bottom end of the base (1); a second driving magnetic block for magnetically coupling with the passive magnetic block on the passive rotating plate (7) is provided on the second driving magnetic rotor (27); the second driving magnetic rotor (27) and the rotating carrier plate (18) are connected by a linkage device to achieve synchronous rotation, so that the rotating carrier plate (18) and the second driving magnetic rotor (27) rotate synchronously.

2. A mixing device for liquid culture medium production according to claim 1, characterized in that: A flow guide tube (4) is fixedly mounted in the middle of the inner cavity of the base (1); a flow guide groove (401) located inside the base (1) is formed on the outer side of the flow guide tube (4); a pipe plug (5) is fixedly mounted on the top of the flow guide tube (4); and the drainage tube (6) is located below the flow guide tube (4).

3. A mixing device for liquid culture medium production according to claim 2, characterized in that: The passive rotating plate (7) is movably sleeved on the outside of the guide tube (4), and the guide tube (4) is provided with a protrusion that fits with the bottom of the inner cavity of the base (1), the protrusion is staggered with the guide groove (401), and the top of the protrusion is movably connected to the bottom of the passive rotating plate (7).

4. A mixing device for liquid culture medium production according to claim 2, characterized in that: A limiting block (8) is fixedly mounted on the top of the passive rotating plate (7), four linkage shafts (9) are mounted on the outside of the contact portion between the passive rotating plate (7) and the limiting block (8), and the four linkage shafts (9) are arranged in a circular array on the outside of the passive rotating plate (7) and the limiting block (8), and a linkage shaft sleeve (10) is sleeved on one end of each linkage shaft (9) away from the passive rotating plate (7), wherein a first arc-shaped connecting shaft (11) is fixedly mounted between two linkage shaft sleeves (10), and second arc-shaped connecting shafts (12) are respectively fixedly mounted on one end of the two linkage shaft sleeves (10) away from the first arc-shaped connecting shaft (11), linkage plates (13) are respectively fixedly mounted on one end of the two second arc-shaped connecting shafts (12) away from the linkage shaft sleeves (10), and limiting shafts (14) are respectively fixedly mounted on the two linkage plates (13), and the stirring magnetic rotor (15) is movably sleeved on the limiting shaft (14).

5. A mixing device for liquid culture medium production according to claim 4, characterized in that: The top of the limiting block (8) is designed as an arc surface, and a sealing block for sealing the bolt is provided on the limiting block (8).

6. A mixing device for liquid culture medium production according to claim 1, characterized in that: A support ring plate (17) is fixedly mounted on the top of the positioning carrier plate (16); the rotating carrier plate (18) is fixedly mounted on the support ring plate (17) via a plane bearing; a passive ring gear (34) is fixedly mounted on the bottom of the rotating carrier plate (18); a reduction motor (35) located on one side of the discharge pipe (6) is fixedly mounted on the bottom of the positioning carrier plate (16); an output shaft of the reduction motor (35) extends to the top of the positioning carrier plate (16) and is fixedly mounted with a driving gear (36); the external teeth of the driving gear (36) mesh with the external teeth of the passive ring gear (34).

7. A mixing device for liquid culture medium production according to claim 1, characterized in that: The stirring drive device further comprises a stirring motor (19) fixedly mounted on the rotating carrier plate (18), an output shaft of the stirring motor (19) being fixedly mounted with a driving bevel gear (20), and the stirring drive device further comprises a support plate (21) fixedly mounted on the rotating carrier plate (18), the support plate (21) being movably sleeved with the output shaft of the stirring motor (19), and the top of the support plate (21) being designed as an inclined surface, a limiting plate (22) being fixedly mounted on the top of the support plate (21), a limiting shaft sleeve (23) being fixedly mounted on one end of the limiting plate (22) away from the support plate (21), a positioning shaft (24) being movably sleeved on the limiting shaft sleeve (23), and the first driving magnetic rotor (25) being fixedly mounted on one end of the positioning shaft (24).

8. A mixing device for liquid culture medium production according to claim 7, characterized in that: The axis of the first driving magnetic rotor (25) and the axis of the stirring magnetic rotor (15) are located on the same axis line.

9. A mixing device for liquid culture medium production according to claim 1, characterized in that: A linkage ring plate (28) is fixedly mounted on the bottom of the second driving magnetic rotor (27), and a plurality of slots (281) distributed in a circumferential array are provided on the bottom of the linkage ring plate (28), and the number of the slots (281) is not less than two, and the linkage device comprises linkage clamping shafts (33) that are the same in number and matched with the slots (281).

10. A mixing device for liquid culture medium production according to claim 9, characterized in that: The linkage device further comprises a limiting ring plate (29) fixedly mounted on the rotating carrier plate (18) and a hydraulic cylinder (30) fixedly mounted on the bottom of the positioning carrier plate (16), the number of the hydraulic cylinders (30) being two, the piston shafts of the two hydraulic cylinders (30) extending above the positioning carrier plate (16) and fixedly mounted with a positioning ring plate (31), a passive ring plate (32) fixedly mounted on the top of the positioning ring plate (31) via a plane bearing, and the linkage clamping shaft (33) fixedly mounted on the passive ring plate (32).

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